Thorough Wide-Temperature-Range Analysis of Pt/SiC and Cr/SiC Schottky Contact Non-Uniformity.

This paper evaluates the non-uniformity degree of platinum and chromium Schottky contacts on silicon carbide. The forward characteristics of experimental samples were acquired in a wide, 60-500 K, temperature range. Microstructural and conventional electrical characterizations were performed, revealing the presence of inhomogeneities on the contact surface.

Modifications of the Dental Hard Tissues in the Cervical Area of Occlusally Overloaded Teeth Identified Using Optical Coherence Tomography.

: Occlusal overloads produce a series of manifestations in teeth, especially attrition and non-carious cervical lesions (NCCL). Optical Coherence Tomography (OCT) can highlight and evaluate tooth lesions. The aim of this study was to examine the changes of dental hard tissues in the cervical area because of occlusal overload by macroscopic examination and using in vitro Swept Source OCT examination.

Applications of Optical Coherence Tomography in the Diagnosis of Enamel Defects.

Developmental defects of enamel (DDEs) are deviations from the normal appearance in terms of the quantity and quality of tooth enamel. They may be genetic or acquired. The most important DDEs are hypomineralization and hypoplasia.

PLL-Based Readout Circuit for SiC-MOS Capacitor Hydrogen Sensors in Industrial Environments.

For proper operation in real industrial conditions, gas sensors require readout circuits which offer accuracy, noise robustness, energy efficiency and portability. We present an innovative, dedicated readout circuit with a phase locked loop (PLL) architecture for SiC-MOS capacitor sensors. A hydrogen detection system using this circuit is designed, simulated, implemented and tested.

Plasmon-Enhanced Photoresponse of Self-Powered Si Nanoholes Photodetector by Metal Nanowires.

In this work, we report the development of self-powered photodetectors that integrate silicon nanoholes (SiNHs) and four different types of metal nanowires (AgNWs, AuNWs, NiNWs, PtNWs) applied on the SiNHs' surface using the solution processing method. The effectiveness of the proposed architectures is evidenced through extensive experimental and simulation analysis. The AgNWs/SiNHs device showed the highest photo-to-dark current ratio of 2.

Thickness Effect on Some Physical Properties of RF Sputtered ZnTe Thin Films for Potential Photovoltaic Applications.

Zinc telluride thin films with different thicknesses were grown onto glass substrates by the rf magnetron sputtering technique, using time as a variable growth parameter. All other deposition process parameters were kept constant. The deposited thin films with thickness from 75 to 460 nm were characterized using X-ray diffraction, electron microscopy, atomic force microscopy, ellipsometry, and UV-Vis spectroscopy, to evaluate their structures, surface morphology, topology, and optical properties.

Oral Mucosa Changes Associated with Wearing Removable Acrylic Dentures.

The main purpose of the study was to highlight the incidence of various changes in the oral mucosa associated with wearing removable acrylic dentures. Materials and method. The study was performed on a total of 45 subjects who presented at the Prosthodontics Clinic and the Oral Rehabilitation Clinic of Craiova Faculty of Dental Medicine during January 2018-May 2020.

60-700 K CTAT and PTAT Temperature Sensors with 4H-SiC Schottky Diodes.

A SiC Schottky dual-diode temperature-sensing element, suitable for both complementary variation of V with absolute temperature (CTAT) and differential proportional to absolute temperature (PTAT) sensors, is demonstrated over 60-700 K, currently the widest range reported. The structure's layout places the two identical diodes in close, symmetrical proximity. A stable and high-barrier Schottky contact based on Ni, annealed at 750 °C, is used.

First Trimester Ultrasound Diagnosis of Right Aortic Arch (RAA).

Objectives: In the present research we proposed to evaluate the cases diagnosed in the first trimester of pregnancy by ultrasound with RAA, knowing the fact that although, in most cases the disease is isolated and asymptomatic, in some cases the presence of RAA can be associated with other fetal structural abnormalities that must be detected and monitored during pregnancy. We established correlations between the postnatal or anatomopathological examination (in cases ended by therapeutic abortion) and the presence of RAA detected in the first trimester.

Material And Method: We conducted a retrospective analytical study that investigated the role of the RAA early detection (isolated or associated with other cardiac abnormalities) for a correct pregnancy monitoring and postpartum management.

Statistical Aspects of Partial Edentulism in a Sample of Adults in Craiova, Romania.

The purpose of the study was to analyze the prevalence of different forms of partial edentulism and the description of the various parameters associated with this disease. Materials and Methods. The study was conducted on a total of 204 subjects who presented themselves at the Clinic of Dental Prosthetics and Oral Rehabilitation Clinic of the Faculty of Dentistry Craiova between October 2015 and June 2016.

Immunohistochemical study of experimentally drug-induced gingival overgrowth.

The increasing frequency of using in the medical practice drugs that have the potential to induce gingival overgrowth (GO) and the existence of many unknown aspects in GO etiopathogenesis have prompted us to carry out this immunohistochemical experimental animal study. We conducted a cell proliferation study by Ki67 immunostaining and a cytokeratin (CK) study using anti-pan-CK AE1∕AE3 and anti-MNF116 antibodies, investigating the differences induced by different classes of drugs that are more frequently involved in the induction of GO. The results of our study indicate that CK AE1∕AE3 plays an important role not only in normal cellular proliferation, but also in hypertrophic tissues, and can be considered a marker of the proliferative process occurring in GO.

400 °C Sensor Based on Ni/4H-SiC Schottky Diode for Reliable Temperature Monitoring in Industrial Environments.

This paper presents a high-temperature probe suitable for operating in harsh industrial applications as a reliable alternative to low-lifespan conventional solutions, such as thermocouples. The temperature sensing element is a Schottky diode fabricated on 4H-SiC wafers, with Ni as the Schottky metal, which allows operation at temperatures up to 400 °C, with sensitivities over 2 mV/°C and excellent linearity (R > 99.99%).

High-performance solid state supercapacitors assembling graphene interconnected networks in porous silicon electrode by electrochemical methods using 2,6-dihydroxynaphthalen.

The challenge for conformal modification of the ultra-high internal surface of nanoporous silicon was tackled by electrochemical polymerisation of 2,6-dihydroxynaphthalene using cyclic voltammetry or potentiometry and, notably, after the thermal treatment (800 °C, N, 4 h) an assembly of interconnected networks of graphene strongly adhering to nanoporous silicon matrix resulted. Herein we demonstrate the achievement of an easy scalable technology for solid state supercapacitors on silicon, with excellent electrochemical properties. Accordingly, our symmetric supercapacitors (SSC) showed remarkable performance characteristics, comparable to many of the best high-power and/or high-energy carbon-based supercapacitors, their figures of merit matching under battery-like supercapacitor behaviour.

Histopathological Study of Oral Pseudoepitheliomatous Hyperplasia.

Pseudoepitheliomatous hyperplasia, also called Heck's disease, is an epithelial, inconstant and conjunctive proliferation that develops as a response to a great variety of stimuli. It is a lesion associated to different diseases, being found in the following etiopathogenic conditions: infectious pathogenic conditions, tumoral pathogenic conditions, inflammatory pathogenic conditions. We studied oral pseudoepitheliomatous hyperplasia for which we performed a histopathological study, on a group of 47 cases of oral pseudoepitheliomatous hyperplasias, where we investigated the following: oral epithelium changes, changes in the underlying lamina propria and associated etiopathogenic conditions.

Effect of ertugliflozin on glucose control, body weight, blood pressure and bone density in type 2 diabetes mellitus inadequately controlled on metformin monotherapy (VERTIS MET).

Aim: We evaluated the efficacy and safety of ertugliflozin, an SGLT2 inhibitor, in type 2 diabetes mellitus (T2DM) inadequately controlled (HbA1c, 7.0%-10.5%) with metformin monotherapy (≥1500 mg/d for ≥8 weeks).

Engineering Graphene Quantum Dots for Enhanced Ultraviolet and Visible Light p-Si Nanowire-Based Photodetector.

In this work, a significant improvement of the classical silicon nanowire (SiNW)-based photodetector was achieved through the realization of core-shell structures using newly designed GQDs via simple solution processing. The poly(ethyleneimine) (PEI)-assisted synthesis successfully tuned both optical and electrical properties of graphene quantum dots (GQDs) to fulfill the requirements for strong yellow photoluminescence emission along with large band gap formation and the introduction of electronic states inside the band gap. The fabrication of a GQD-based device was followed by systematic structural and photoelectronic investigation.

The Role Played by Growth Factors TGF-β1, EGF and FGF7 in the Pathogeny of Oral Pseudoepitheliomatous Hyperplasia.

Pseudoepitheliomatous hyperplasia is an epithelial proliferation that develops in the dermis or lamina propria. It is a lesion associated to another pathology, which appears as a response to a great variety of infectious, neoplastic, inflammatory or traumatic stimuli. The etiopathogeny of this lesion is not clear yet.

Experimental animal model in a histological study of drug-induced gingival overgrowth.

Gingival overgrowth (GO) is a pathology with important aesthetic and functional implications and with a multifactorial pathogenesis. Incriminated etiological factors include antihypertensive, antiepileptic and immunosuppressant medication. We aimed to evaluate the induction of gingival overgrowth on experimental rats, depending on the drug type, dose and duration.

Study of some invasiveness markers as pathogenic factors in oral pseudoepitheliomatous hyperplasia.

Pseudoepitheliomatous hyperplasia is a benign reactivated epithelial lesion secondary to another pathology, whose incidence is difficult to establish. There still exist controversies regarding the origin and pathogenesis of these lesions. For this purpose, we performed an immuno-histochemical study upon 20 cases of oral pseudoepitheliomatous hyperplasia associated with inflammatory and neoplastic conditions, investigating a series of markers with a possible pathogenic potential in developing this type of lesions.

Clinical, imagistic and histopathological study of chronic apical periodontitis.

Periapical lesions are among the most frequent periodontal pathologies in human teeth, generally called apical periodontitis. Apical periodontitis is a continuation of the endodontic space infection and it is manifested as a response of the host defense against the microbial action. It may determine local inflammation, hard tissue resorption, destruction of other periapical tissues.

Local cause of gingival overgrowth. Clinical and histological study.

The overgrowth, depending on its extension, has multiple effects on the stomatognathic apparatus: functional disorders (impaired speech), difficulty in chewing and aesthetic problems but can cause significant psychological problems. We proposed this study, motivated by the relative increased frequency of the gum outgrowth, its multifactorial etiopathogeny, but especially from the point of view of the specialist practitioner, by the problems that this pathology raises not only for the functionality of the stomatognathic apparatus but also for the facial esthetics, and especially for future therapeutic attitudes needed to solve the existing pathology at this level. We conducted a clinical study and a histological one.

Prosthetic Treatment Possibilities for Extended Partially Edentulous and Completely Edentulous Patients, Depending on the Clinico-Morphological Characteristics of the Oral Mucosal Substrate.

The number of partially and completely edentulous patients requiring removable prosthetic treatment has increased constantly and denture wearers often have an associated oral status pathology. The purpose of this article is to present removable prosthetic treatment options that we chose for the extended partially edentulous and completely edentulous patients who required prosthetic rehabilitation treatment. We conducted this study on 52 extended partially edentulous and completely edentulous patients.

Cell populations involved in the processes of local mucosal defense in extended partially edentulous and completely edentulous patients. Clinical and immunohistochemical study.

Considering the fact that extended partial edentation and complete edentation have high incidence rates worldwide, the necessity for correct prosthetic treatment is very important. We performed a clinical study on 37 extended partially edentulous patients and completely edentulous patients, who were divided into three groups. We also performed a morphological study using classic techniques of histology and immunohistochemistry methods on sections obtained from oral mucosa fragments collected from these patients and processed by paraffin embedding technique.

The Physician's Attitude towards the End of the Existence.

The physician's attitude towards death, a phenomenon which he frequently encounters in his work practice, is most of the times ambiguous, uncertain, lacking a philosophical significance coherent enough. During the period corresponding to the transition from life to death, when the human being who is about to relinquish life for good lives, suffers, understands and needs assistance, most of the physicians adopt a particular detachment conduct. The physician's participation in assisting the patient, constant until then, natural, sharply decreases the moment the diagnosis has become, "there is nothing else to be done".

Heidelberg Retina Tomography analysis in optic disks with anatomic particularities.

Due to its objectivity, reproducibility and predictive value confirmed by many large-scale statistical clinical studies, Heidelberg Retina Tomography has become one of the most used computerized image analysis of the optic disc in glaucoma. It has been signaled, though, that the diagnostic value of Moorfieds Regression Analyses and Glaucoma Probability Score decreases when analyzing optic discs with extreme sizes. The number of false positive results increases in cases of megalopapillae and the number of false negative results increases in cases of small size optic discs.